/** Constructor with normal and point
*
* @param normal :: normal to the plane. Points that are in the direction of the
*normal of the plane are considered to be bounded by it.
* @param point :: any point that is on the plane
*/
MDPlane::MDPlane(const Mantid::Kernel::VMD &normal,
const Mantid::Kernel::VMD &point) {
m_nd = normal.getNumDims();
if ((m_nd < 1) || (m_nd > 100))
throw std::invalid_argument(
"MDPlane::ctor(): Invalid number of dimensions in the normal vector !");
if (point.getNumDims() != normal.getNumDims())
throw std::invalid_argument("MDPlane::ctor(): Inconsistent number of "
"dimensions in the normal/point vectors!");
construct(normal, point);
}
/** Constructor
*
* @param workspace :: IMDWorkspace to plot
* @param logScale :: true to plot Y in log scale
* @param start :: start point in N-dimensions of the line
* @param end :: end point in N-dimensions of the line
* @param normalize :: method for normalizing the line
* @param isDistribution :: is this a distribution (divide by bin width?)
* @return
*/
MantidQwtIMDWorkspaceData::MantidQwtIMDWorkspaceData(Mantid::API::IMDWorkspace_const_sptr workspace, const bool logScale,
Mantid::Kernel::VMD start, Mantid::Kernel::VMD end,
Mantid::API::MDNormalization normalize,
bool isDistribution)
: m_workspace(workspace),
m_logScale(logScale), m_minPositive(0),
m_preview(false),
m_start(start),
m_end(end),
m_normalization(normalize),
m_isDistribution(isDistribution),
m_transform(NULL),
m_plotAxis(PlotDistance), m_currentPlotAxis(PlotDistance)
{
if (start.getNumDims() == 1 && end.getNumDims() == 1)
{
if (start[0] == 0.0 && end[0] == 0.0)
{
// Default start and end. Find the limits
Mantid::Geometry::VecIMDDimension_const_sptr nonIntegDims = m_workspace->getNonIntegratedDimensions();
std::string alongDim = "";
if (!nonIntegDims.empty())
alongDim = nonIntegDims[0]->getName();
else
alongDim = m_workspace->getDimension(0)->getName();
size_t nd = m_workspace->getNumDims();
m_start = VMD(nd);
m_end = VMD(nd);
for (size_t d=0; d<nd; d++)
{
IMDDimension_const_sptr dim = m_workspace->getDimension(d);
if (dim->getDimensionId() == alongDim)
{
// All the way through in the single dimension
m_start[d] = dim->getMinimum();
m_end[d] = dim->getMaximum();
}
else
{
// Mid point along each dimension
m_start[d] = (dim->getMaximum() + dim->getMinimum()) / 2.0f;
m_end[d] = m_start[d];
}
}
}
}
// Unit direction of the line
m_dir = m_end - m_start;
m_dir.normalize();
// And cache the X/Y values
this->cacheLinePlot();
}
/** Set the width of the line in each dimensions
* @param width :: vector for the width in each dimension. X dimension stands in for the XY plane width */
void LineViewer::setThickness(Mantid::Kernel::VMD width)
{
if (m_ws && width.getNumDims() != m_ws->getNumDims())
throw std::runtime_error("LineViewer::setThickness(): Invalid number of dimensions in the width vector.");
m_thickness = width;
updateStartEnd();
}
/** Set the end point of the line to integrate
* @param end :: vector for the end point */
void LineViewer::setEnd(Mantid::Kernel::VMD end)
{
if (m_ws && end.getNumDims() != m_ws->getNumDims())
throw std::runtime_error("LineViewer::setEnd(): Invalid number of dimensions in the end vector.");
m_end = end;
updateStartEnd();
}
/** Set the start point of the line to integrate
* @param start :: vector for the start point */
void LineViewer::setStart(Mantid::Kernel::VMD start)
{
if (m_ws && start.getNumDims() != m_ws->getNumDims())
throw std::runtime_error("LineViewer::setStart(): Invalid number of dimensions in the start vector.");
m_start = start;
updateStartEnd();
}
/** Apply the transformation to an input vector (as a VMD type).
* This wraps the apply(in,out) method (and will be slower!)
*
* @param inputVector :: an inD-length vector
* @return the output vector as VMD
*/
Mantid::Kernel::VMD
CoordTransform::applyVMD(const Mantid::Kernel::VMD &inputVector) const {
if (inputVector.getNumDims() != inD)
throw std::runtime_error("CoordTransform::apply(): inputVector has the "
"wrong number of coordinates!");
coord_t *outArray = new coord_t[outD];
this->apply(inputVector.getBareArray(), outArray);
VMD out(outD, outArray);
delete[] outArray;
return out;
}
/** Obtain coordinates for a line plot through a MDWorkspace.
* Cross the workspace from start to end points, recording the signal along the
*lin at either bin boundaries, or halfway between bin boundaries (which is bin
*centres if the line is dimension aligned). If recording halfway values then
*omit points in masked bins.
*
* @param start :: coordinates of the start point of the line
* @param end :: coordinates of the end point of the line
* @param normalize :: how to normalize the signal
* @returns :: LinePlot with x as the boundaries of the bins, relative
* to start of the line, y set to the normalized signal for each bin with
* Length = length(x) - 1 and e as the error vector for each bin.
* @param bin_centres :: if true then record points halfway between bin
*boundaries, otherwise record on bin boundaries
*/
IMDWorkspace::LinePlot MDHistoWorkspace::getLinePoints(
const Mantid::Kernel::VMD &start, const Mantid::Kernel::VMD &end,
Mantid::API::MDNormalization normalize, const bool bin_centres) const {
LinePlot line;
size_t nd = this->getNumDims();
if (start.getNumDims() != nd)
throw std::runtime_error("Start point must have the same number of "
"dimensions as the workspace.");
if (end.getNumDims() != nd)
throw std::runtime_error(
"End point must have the same number of dimensions as the workspace.");
// Unit-vector of the direction
VMD dir = end - start;
const auto length = dir.normalize();
// Vector with +1 where direction is positive, -1 where negative
#define sgn(x) ((x < 0) ? -1.0f : ((x > 0.) ? 1.0f : 0.0f))
VMD dirSign(nd);
for (size_t d = 0; d < nd; d++) {
dirSign[d] = sgn(dir[d]);
}
const size_t BADINDEX = size_t(-1);
// Dimensions of the workspace
boost::scoped_array<size_t> index(new size_t[nd]);
boost::scoped_array<size_t> numBins(new size_t[nd]);
for (size_t d = 0; d < nd; d++) {
IMDDimension_const_sptr dim = this->getDimension(d);
index[d] = BADINDEX;
numBins[d] = dim->getNBins();
}
const std::set<coord_t> boundaries =
getBinBoundariesOnLine(start, end, nd, dir, length);
if (boundaries.empty()) {
this->makeSinglePointWithNaN(line.x, line.y, line.e);
// Require x.size() = y.size()+1 if recording bin boundaries
if (!bin_centres)
line.x.push_back(length);
return line;
} else {
// Get the first point
std::set<coord_t>::iterator it;
it = boundaries.cbegin();
coord_t lastLinePos = *it;
VMD lastPos = start + (dir * lastLinePos);
if (!bin_centres) {
line.x.push_back(lastLinePos);
}
++it;
coord_t linePos = 0;
for (; it != boundaries.cend(); ++it) {
// This is our current position along the line
linePos = *it;
// This is the full position at this boundary
VMD pos = start + (dir * linePos);
// Position in the middle of the bin
VMD middle = (pos + lastPos) * 0.5;
// Find the signal in this bin
const auto linearIndex =
this->getLinearIndexAtCoord(middle.getBareArray());
if (bin_centres && !this->getIsMaskedAt(linearIndex)) {
coord_t bin_centrePos =
static_cast<coord_t>((linePos + lastLinePos) * 0.5);
line.x.push_back(bin_centrePos);
} else if (!bin_centres)
line.x.push_back(linePos);
if (linearIndex < m_length) {
auto normalizer = getNormalizationFactor(normalize, linearIndex);
// And add the normalized signal/error to the list too
auto signal = this->getSignalAt(linearIndex) * normalizer;
if (boost::math::isinf(signal)) {
// The plotting library (qwt) doesn't like infs.
signal = std::numeric_limits<signal_t>::quiet_NaN();
}
if (!bin_centres || !this->getIsMaskedAt(linearIndex)) {
line.y.push_back(signal);
line.e.push_back(this->getErrorAt(linearIndex) * normalizer);
}
// Save the position for next bin
lastPos = pos;
} else {
// Invalid index. This shouldn't happen
line.y.push_back(std::numeric_limits<signal_t>::quiet_NaN());
line.e.push_back(std::numeric_limits<signal_t>::quiet_NaN());
}
lastLinePos = linePos;
} // for each unique boundary
// If all bins were masked
if (line.x.size() == 0) {
this->makeSinglePointWithNaN(line.x, line.y, line.e);
}
}
return line;
}
